O odkryciu utworów starszego paleozoiku we wschodniej części synklinorium kielecko-łagowskiego

Abstract

OLDER PALAEOZOIC DEPOSITS IN THE EASTERN PART OF THE KIELCE-ŁAGÓW SYNCLINORIUMSummaryIn boreholes U-I and U-X, localized in the eastern part of the Kielce-Łagów Syndinorium, in the zone of Middle Devonian carbonate rocks (Fig. 1), clayey-sandy deposits, unknown in this area, were encountered just below Quaternary rocks (Fig. 2). They contained no macrofauna or macroflora that could be used as a palaeontological index for stratigraphic subdivision. In their attempts to find microscopic organic remains in analyzed rock samples the authors achieved only one positive result. A rich Acritarcha assemblage was encountered in green-silvery clayey shales, occurring at a depth of 18.5–21.0 m in borehole U-1. On this basis, the authors refer these rocks to the Tremadocian.Stratigraphic conclusions concerning the remaining clayey-sandy deposits are based on lithological petrographic analyses. The authors find that the rocks which occur in boreholes U-1 and U-X at a depth of 26.2–34.5 m may belong to the Lower Ordovician or to the Middle Cambrian. The Silurian age of rocks occurring in borehole U-X at a depth of 10.0–26.2 m and 34.5–100 m is indicated indirectly by the pyroclastic material which they contain.The authors, conclude that the sequence of rocks in both boreholes represents part of an intramountainous synline which forms the eastern extension of the Kielce-Łagów Synclinorium. The axis of this syncline is inclined to WNW and it is in this direction that a fuller sequence of rocks and new stratigraphic members may be revealed.